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<?php
/*--------------------------------------------------------------------------+
This file is part of eStudy.
messaging/classes/class.messaging_autosearch.inc.php
- Modulgruppe:  Messaging
- Beschreibung: Klasse für die Autocompletion beim Eintragen von Empfängern.
- Version:      0.2, 21.01.2009
- Autor(en):    
Alexander Rausch <alexander.rausch@mni.fh-giessen.de> [Refactoring WS 08/09],
Waldemar Krampetz <waldemar.krampetz@mni.fh-giessen.de>,
Dennis Bayer <dennis.bayer@mni.fh-giessen.de><bayer.d@gmx.de>
+---------------------------------------------------------------------------+
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or any later version.
+---------------------------------------------------------------------------+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+--------------------------------------------------------------------------*/
class MessagingAutoSearch {
    
    private $searchString;
    
    private $db;
    
    private $messaging;
    
    private $translate;

    private $locale;
    
    public function __construct($searchString, $messaging) {
        global $db;
        $this->db = $db;
        $this->messaging = $messaging;
        $this->searchString = Data::toMysql(trim($searchString));
        
        $this->locale = getLocale();
        $this->translate = getTranslate("messaging");
    }
        
    public function getSearchResults() {

        $queryOk = false;
        $autolist = "";
        $whereAddition = "";
        $searchQuery = "SELECT DISTINCT(user.ID), 
                                        user.Nachname, 
                                        user.Vorname,
                                        user.ShortName, 
                                        user.picture 
                                        FROM user";
        
        $commaCount = substr_count ($this->searchString, "," );
        
        if ($commaCount <= 0) {
            //Nach Vorname suchen
            $whereAddition = "AND user.Nachname LIKE '" . $this->searchString . "%'";
        } else {
            //Nach Vor- und Nachname suchen, falls ein Komma im String vorhanden ist
            
            $comma = strpos($this->searchString, ",");

            //Vor und Nachname extrahieren
            $aftername = substr($this->searchString, 0, $comma);
            $prename = substr($this->searchString, $comma+1, (strlen($this->searchString)-$comma));
            
            $whereAddition = "AND user.Nachname LIKE '".$aftername."%' AND user.Vorname LIKE '".$prename."%'";
        }
     
     $searchQuery.= " WHERE user.Invisible = '0' ".$whereAddition." ORDER BY user.Nachname, user.Vorname";
     
     if($this->searchString != "") {
        global $memcache;
        /* Mit MD5 eine eindeutige ID für den SearchString ermitteln */
        $md5hashOfSearchString =  "messaging_autocompletion_". md5($this->searchString);

        if ($memcache instanceof Memcache) {
             //hole daten aus cache
             $queryResults = $memcache->get($md5hashOfSearchString);

             if($queryResults == false) {
                 //hole daten und lege in memcache ab
                 $queryResults = $this->db->get_results($searchQuery);
                 if($this->db->num_rows > 0) {
                        $memcache->set($md5hashOfSearchString, $queryResults, false, 3600);
                        $queryOk = true;
                 }
                 else {
                    $queryOk = false;
                 }
                 
             }
             else {
                 $queryOk = true;
             }
        }
        else {
            //hole daten aus DB
            $queryResults = $this->db->get_results ($searchQuery);
            if($this->db->num_rows > 0) {
                $queryOk = true;
            }
            else {
                $queryOk = false;
            }
        }
     }
     
     if($queryOk) {
         global $settings;
         foreach($queryResults as $searchHit) {
             $userPicture = "";
             
             $userPicture = PATH_TO_ROOT.$settings["upload_path"]."user/".$searchHit->ID."/".$searchHit->picture;
             
             //falls kein Benutzerbild vorhanden ist, schauen ob ein Avatar verfügbar ist
             if(!is_file($userPicture)) {
                $avatar = $this->db->get_row("SELECT useravatar FROM forum_user WHERE userID='$searchHit->ID'");
                $avatar = $avatar->useravatar;
                if(empty($avatar) || $avatar == "userpicture") {
                        $userPicture = "../images/nopic.gif";
                }
                else {
                        $userPicture = PATH_TO_ROOT."forum/".$avatar; 
                }
             }
                        
             /* Prüfen ob es einen User mit dem gleinen Namen gibt */
             $countUsers = $this->messaging->sameNameUsers($searchHit->ID);
             $jsName = "";
             if($countUsers > 0) {
                                $jsName = $searchHit->Nachname.", ".$searchHit->Vorname.", ".$searchHit->ShortName;
             }
             else {
                $jsName = $searchHit->Nachname.", ".$searchHit->Vorname;
             }
             
             $autolist .= "<a href=\"#\" class=\"messaging_autosearch\" onclick=\"hideAutoList('messaging_autocompletion_div'); addUserToRecipients('".$jsName."');\" title=\"".$this->translate->_("Zu Empfaenger hinzufuegen")."\">
             <img src=\"".PATH_TO_ROOT."common/makethumb.php?picurl=".$userPicture."&maxw=30&maxh=30\" alt=\"pic\" ".$searchHit->Nachname."\" title=\"".$this->translate->_("Zu Empfaenger hinzufuegen")."\" /> 
             ".$searchHit->Vorname." ".$searchHit->Nachname."</a>";
         }
     }
     else {
         $autolist .= "<p>".$this->translate->_("Keinen Benutzer gefunden!")."</p>";
     }
     
     return $autolist;
    }
}
?>

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